the402 endpoint detail

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agent402.tools api yield-curve-spread

https://agent402.tools/api/yield-curve-spread

payable

Derived 2s10s and 3m10y Treasury yield-curve spreads (in basis points) plus a boolean recession-signal flag when the curve is inverted. Source: FRED constant-maturity yields (public domain). No params.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
135 ms
Payment options
12 usable of 12
Last checked
2026-08-10T09:13:35.242Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fyield-curve-spread"